Preparation process of manganese zinc ferrite powder

Abstract

The invention relates to the technical field of preparation of manganese zinc ferrite powder, and discloses a preparation process of manganese zinc ferrite powder, which comprises the following steps: S1, adding raw materials, proportioning and mixing the raw materials; s2, cutting: cutting the mixed raw materials in a cutting device; s3, sanding is conducted, specifically, sanding granulation is conducted on the cut materials in a sanding device; s4, pre-sintering: pre-sintering the sprayed raw materials; the cutting structure is used for cutting the raw materials in the inner barrels, and in the process that the cutting structure moves upwards, is pulled out of the corresponding inner barrel and moves downwards again, the next inner barrel containing the raw materials can be automatically switched in the cutting barrel to continue switching, and meanwhile, the cutting structure can be used for cutting the raw materials. When the raw materials are cut, the inner barrel filled with the cut raw materials can be switched to the fifth discharging opening of the sanding barrel to be automatically discharged, sanding work is carried out in the sanding barrel, and therefore the raw material ratio cannot be changed, the preparation quality is improved, and meanwhile the preparation work efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of preparation of manganese-zinc ferrite powder, in particular to a preparation process of manganese-zinc ferrite powder. Background Art

[0002] A kind of soft ferrite with spinel structure; made of iron, manganese, zinc oxides and their salts by ceramic technology; it has high initial magnetic permeability; generally used in the frequency range of 1 kHz to 10 MHz; can be used to make inductors, transformers, filter cores, magnetic heads and antenna rods; The preparation process in the prior art automatically weighs the separation through a weighing device to avoid product quality inspection failure due to weight, thereby improving the product quality inspection pass rate, and automatically stacks the bagged powder through a stacking mechanism to avoid manual handling and stacking of the bagged powder, thereby reducing labor costs.

[0003] However, before preparation, when the raw materials are cut and crushed, the first and second crushing rods are rotated in the preliminary crushing frame to carry out the crushing work. The crushed raw materials fall into the outer shell and are then ground and crushed. However, when a batch of raw materials is crushed in the preliminary crushing frame, it is impossible to continue adding the next batch of raw materials to the preliminary crushing frame for crushing. When the next batch of raw materials is added before the first batch of raw materials is completely crushed in the preliminary crushing frame, the raw material ratio will change, thereby reducing the preparation quality. Moreover, after waiting for the first batch of raw materials to be completely crushed, the next batch of raw materials will be added for further crushing, which will further reduce the preparation quality. Therefore, there is room for improvement. Summary of the invention

[0004] In order to solve the above-mentioned problems, the present invention provides a preparation process of manganese-zinc ferrite powder.

[0005] The present invention provides a preparation process of manganese-zinc ferrite powder using the following technical scheme: A preparation process of manganese-zinc ferrite powder comprises the following steps: S1: adding raw materials, proportioning and mixing the raw materials in a mixing device; S2: cutting, cutting the mixed raw materials in a cutting device; S3: sand grinding, in which the cut pieces are sanded and granulated in a sand grinding device; S4: pre-burning, pre-burning the sprayed raw materials to reduce impurities; S5: Packaging, packaging and stacking the pre-burned powder; The sanding device in S3 includes a material receiving frame and a sanding cylinder. The upper parts of the left and right sides of the material receiving frame with a third material discharge opening on the lower inner wall are fastened with brackets by bolts. The sanding cylinder is arranged on two brackets by a swinging structure. The bottom end of the sanding cylinder is inserted into the material receiving frame. The sanding cylinder is provided with a sanding structure. Material discharge pipes are installed in the two fourth material discharge openings at the lower edge of the sanding cylinder. A lifting pipe is movably inserted into the material discharge pipe. A sieve plate is installed in the lifting pipe. The two lifting pipes are installed at the bottom end of the sanding cylinder by the lifting structure. The cutting device in S2 comprises a cutting cylinder installed at the front edge of the sanding cylinder, a cutting structure is arranged on the cutting cylinder, a plurality of inner cylinders are arranged in the cutting cylinder through a switching structure, a first feeding port is opened at the bottom of the cutting cylinder, the first feeding port is connected with a fifth feeding port opened on the sanding cylinder, and a feeding pipe is fixedly passed through the left edge of the cutting cylinder; The cutting structure includes a cylinder installed on the right edge of the cutting cylinder, the top end of the cylinder output shaft is connected to a first lifting plate, the left end of the first lifting plate is installed with a first motor, one end of the first motor output shaft is connected to a first rotating rod that rotates and passes through the first lifting plate, and a plurality of cutting knives are installed on the part of the first rotating rod that is movably inserted into the cutting cylinder; The switching structure includes a switching disk rotatably mounted on the lower inner wall of the cutting cylinder, the switching disk is provided with a plurality of second material discharge ports, the plurality of second material discharge ports are distributed at equal angles on the circumference of the switching disk, a plurality of inner cylinders are fixedly mounted at the second material discharge ports on the switching disk, the inner cylinders and the second material discharge ports are connected to each other, the switching disk, a switching rod is fixedly connected to the middle of the upper part of the switching disk, the top end of the switching rod is rotatably passed through the cutting cylinder, and the switching rod is connected to the first lifting plate through a first transmission structure. The first transmission structure includes a first gear fixedly sleeved on the switching rod and located above the cutting cylinder, the first lifting plate is connected with an insertion rod at the middle of the end surface of one end of the switching rod, a first guide groove is opened at a position near the middle on the cutting cylinder, a first guide bar is slidably arranged in the first guide groove, a first transmission plate is installed above the first guide bar, a plurality of extrusion grooves are opened at equal intervals on the first transmission plate near the upper part of one side surface of the first lifting plate, vertical grooves are opened on the lower groove walls of two adjacent extrusion grooves, a reset groove connecting the top ends of the plurality of extrusion grooves is opened on the first transmission plate, one end of the insertion rod is movably inserted into the extrusion groove, and the first transmission plate is provided with teeth meshing with the first gear.

[0006] Preferably, the swing structure includes two swing rods that rotate and pass through one side of two brackets close to each other, and a swing plate is installed on one end of the two swing rods close to each other. A plurality of reinforcement rods are connected between the bottom of the swing plate and the sanding cylinder, a supporting structure is arranged between the sanding cylinder and the inner wall of the material receiving frame, and a driving structure is arranged on the top of the two brackets.

[0007] Preferably, the supporting structure includes two supporting rods connected to the lower side of the sanding cylinder near the inner walls on the left and right sides of the material receiving frame. Support grooves are provided on the inner walls on the left and right sides of the material receiving frame. The support groove is an arc groove with a rocker arm as the axis, and one end of the support rod is supported in the support groove.

[0008] Preferably, the sanding structure includes a second rotating rod that is rotatably inserted into the sanding cylinder, a plurality of sanding rods are installed on the part of the second rotating rod inserted into the sanding cylinder, the top end of the second rotating rod rotates to pass through a swing plate, a mounting plate is installed in the middle of the swing plate, a second motor is installed in the middle of the upper inner wall of the mounting plate, and the bottom end of the output shaft of the second motor is connected to the top end of the second rotating rod.

[0009] Preferably, the driving structure includes two transverse grooves provided on the bracket near the front and rear side edges, each of which has a fixed rod connected between the inner walls at the left and right ends of the transverse groove, and a moving frame is movably mounted on each of the two fixed rods, and a second transmission structure is arranged between the moving frame and the second rotating rod, and a connecting strip is connected at four corner positions of the side surface of the moving frame, one end of the connecting strip is connected to the driving ring, a through groove is provided on the bracket at a side away from the swing plate, one end of the swing rod is rotatably connected to a groove wall at one end of the through groove, a second gear is fixedly mounted on the part of the swing rod inserted into the through groove, a driving frame is vertically movably passed through the through groove, and teeth meshing with the second gear are arranged on the inner wall of the driving frame, and a second transmission plate is fixedly installed at the middle of the upper and lower side surfaces of the driving frame, and a first transmission groove is provided on each of the second transmission plates, and an extrusion wheel is movably arranged at the position of the first transmission groove on the second transmission plate, and the extrusion wheel is movably mounted on the driving ring.

[0010] Preferably, the second transmission structure includes a swivel ring rotatably mounted on the moving frame, the swivel ring is fixedly connected with an L-shaped plate extending to the top of the swinging plate, a transmission ring is arranged in the middle of the upper part of the swinging plate, second guide bars are installed at the left and right edges below the transmission ring, and two second guide grooves for sliding the second guide bars are arranged on the swinging plate, one end of the L-shaped plate is connected to the edge on the transmission ring, two second transmission grooves are arranged on the front and rear sides of the transmission ring, and two straight grooves are arranged on the left and right sides of the transmission ring, and the two ends of the straight grooves are respectively connected to the ends of the two second transmission grooves, and the second transmission groove is in an arc shape, and a fixed sleeve is provided on the second rotating rod, and an L-shaped rod is connected to the fixed sleeve, and the bottom end of the L-shaped rod is movably inserted into one of the second transmission grooves.

[0011] Preferably, the lifting structure includes a second lifting plate fixedly connected to the bottom ends of the two lifting tubes, a plurality of telescopic rods are connected to the middle of the upper surface of the second lifting plate and the lower surface of the sanding cylinder, a spring is sleeved on each of the telescopic rods, two ends of the spring are respectively connected to the lower surface of the second lifting plate and the sanding cylinder, a mounting seat is installed in the middle of the lower surface of the second lifting plate, a roller is installed in the mounting seat, the roller is rotatably arranged on an arc plate, two ends of the arc plate are respectively connected to the inner walls of the front and rear sides of the material receiving frame, the middle section of the arc plate is an arc shape with a rocker as the axis, and a plurality of protrusions are evenly spaced on the upper surface of the middle section of the arc plate.

[0012] In summary, the present invention includes the following beneficial technical effects: The present invention is provided with a cutting device, on which a cutting structure, a switching structure and a first transmission structure are provided. A plurality of inner cylinders are arranged in the cutting cylinder through the switching structure, and the cutting structure is used to cut the raw material in the inner cylinder. In the process of the cutting structure being pulled out from the corresponding inner cylinder and being moved down again, the next inner cylinder containing the raw material can be automatically switched in the cutting cylinder to continue switching. At the same time, the inner cylinder containing the cut raw material can be switched to the fifth unloading port of the sand mill cylinder for automatic unloading, and sand milling can be performed in the sand mill cylinder. In this way, the raw material ratio will not be changed, and the preparation quality can be improved while the preparation work efficiency can be improved. The present invention is provided with a swing structure, a supporting structure, a lifting structure and a sanding structure. When the cut raw material is sanded in the sanding barrel, the swing structure can be used to drive the sanding barrel to swing back and forth, which not only improves the feeding speed of the sanded raw material in the sanding barrel 3 and performs auxiliary screening, but also makes the raw material to be sanded in the sanding barrel 3 better contact with the sanding structure after the sanded raw material is discharged, so as to improve the sanding work efficiency; the supporting structure can increase the swing stability of the swing barrel during the swinging of the sanding barrel; when the sanding barrel swings, the lifting structure drives the screen plate to move up and down in the discharge pipe, so as to better screen the sanded raw material for discharge, and further improve the preparation work efficiency; The present invention is provided with a sanding structure, a driving structure and a second transmission structure, so that the sanding structure can automatically realize the reciprocating swing function of the sanding cylinder through the second transmission structure and the driving structure while sanding the raw material, and the operation is more labor-saving and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the material connection frame after disassembly of the present invention; Figure 3 for Figure 2 A in the enlarged view; Figure 4 It is a schematic diagram of the structure of the cutting cylinder in the present invention; Figure 5 for Figure 4 A magnified view of the structure at B in FIG. Figure 6 It is a structural schematic diagram of the first transmission plate in the present invention; Figure 7 It is a schematic diagram of the structure inside the cutting tube of the present invention; Figure 8 It is a schematic diagram of the structure after the cutting cylinder on the sanding cylinder of the present invention is disassembled; Fig. 9 It is a schematic diagram of the structure of the sand mill cylinder in the present invention; Fig.10 It is a structural schematic diagram of the bracket and the swing structure in the present invention; Fig.11 for Fig.10 A magnified view of the structure at C; Fig.12 for Fig.10 A magnified view of the structure at D; Fig.13 It is a schematic diagram of the process flow of the present invention.

[0014] Description of reference numerals: 1. material receiving frame; 2. bracket; 3. sanding cylinder; 4. cutting cylinder; 5. feeding tube; 6. switching disk; 7. inner cylinder; 8. first material discharge port; 9. second material discharge port; 10. switching rod; 11. cylinder; 12. first lifting plate; 13. first motor; 14. first rotating rod; 15. cutting knife; 16. inserting rod; 17. first transmission plate; 18. first gear; 19. first guide strip; 20. first guide groove; 21. extrusion groove; 22. vertical groove; 23. reset groove; 24. swing rod; 25. swing plate; 26. reinforcement rod; 27. support rod; 28. support groove; 29. ​​mounting plate; 30. second rotating rod; 31. Sanding rod; 32. Feeding tube; 33. Lifting tube; 34. Second motor; 35. Through slot; 36. Driving frame; 37. Second gear; 38. Horizontal slot; 39. Fixed rod; 40. Moving frame; 41. Connecting strip; 42. Driving ring; 43. Second transmission plate; 44. First transmission slot; 45. Extrusion wheel; 46. Fixed sleeve; 47. Transmission ring; 48. Second transmission slot; 49. Straight slot; 50. Second guide strip; 51. Second guide slot; 52. L-shaped plate; 53. Swivel; 54. Second lifting plate; 55. Telescopic rod; 56. Spring; 57. Mounting seat; 58. Roller; 59. Arc plate; 60. Raised part. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-13 The present invention is described in further detail.

[0016] A preparation process of manganese-zinc ferrite powder comprises the following steps: S1: adding raw materials, proportioning and mixing the raw materials in a mixing device; S2: cutting, cutting the mixed raw materials in a cutting device; S3: sand grinding, in which the cut pieces are sanded and granulated in a sand grinding device; S4: pre-burning, pre-burning the sprayed raw materials to reduce impurities; S5: Packaging, packaging and stacking the pre-burned powder; The sanding device in S3 includes a material receiving frame 1 and a sanding tube 3. The upper part of the left and right sides of the material receiving frame 1 with a third material discharge opening on the lower inner wall are fastened with brackets 2 by bolts. The sanding tube 3 is arranged on the two brackets 2 through a swing structure. The bottom end of the sanding tube 3 is inserted into the material receiving frame 1. The sanding tube 3 is provided with a sanding structure. The two fourth material discharge openings at the lower edge of the sanding tube 3 are both provided with material discharge pipes 32. A lifting pipe 33 is movably inserted into the material discharge pipe 32. A sieve plate is installed in the lifting pipe 33. The two lifting pipes 33 are installed at the bottom end of the sanding tube 3 through the lifting structure. The cutting device in S2 includes a cutting cylinder 4 installed at the front edge of the sanding cylinder 3, a cutting structure is provided on the cutting cylinder 4, a plurality of inner cylinders 7 are provided in the cutting cylinder 4 through a switching structure, a first feeding port 8 is provided at the bottom of the cutting cylinder 4, the first feeding port 8 is connected to the fifth feeding port provided on the sanding cylinder 3, and a feeding pipe 5 is fixedly passed through the left edge of the cutting cylinder 4; The cutting structure includes a cylinder 11 installed on the right edge of the cutting cylinder 4, the top end of the output shaft of the cylinder 11 is connected to a first lifting plate 12, a first motor 13 is installed on the left end of the first lifting plate 12, one end of the output shaft of the first motor 13 is connected to a first rotating rod 14 that rotates through the first lifting plate 12, and a plurality of cutting knives 15 are installed on the part of the first rotating rod 14 that is movably inserted into the cutting cylinder 4; The switching structure includes a switching disk 6 rotatably mounted on the lower inner wall of the cutting cylinder 4, a plurality of second material discharge ports 9 are provided on the switching disk 6, and the plurality of second material discharge ports 9 are distributed at equal angles on the circumference of the switching disk 6, a plurality of inner cylinders 7 are fixedly mounted at the second material discharge ports 9 on the switching disk 6, and the inner cylinders 7 are connected to the second material discharge ports 9, and the switching disk 6 is fixedly connected to a switching rod 10 at the middle of the upper part of the switching disk 6, and the top end of the switching rod 10 is rotated to pass through the cutting cylinder 4, and the switching rod 10 is connected to the first lifting plate 12 through a first transmission structure. The first transmission structure includes a first gear 18 fixedly sleeved on the switching rod 10 and located above the cutting cylinder 4. The first lifting plate 12 is connected to the insertion rod 16 at the middle of the end surface of one end of the switching rod 10. A first guide groove 20 is provided near the middle position on the cutting cylinder 4. A first guide bar 19 is slidably provided in the first guide groove 20. A first transmission plate 17 is installed above the first guide bar 19. The first transmission plate 17 is provided with a plurality of extrusion grooves 21 at equal intervals above one side of the first lifting plate 12. Vertical grooves 22 are provided at the lower groove walls of two adjacent extrusion grooves 21. The first transmission plate 17 is provided with a reset groove 23 connected to the tops of the plurality of extrusion grooves 21. One end of the insertion rod 16 is movably inserted into the extrusion groove 21. The first transmission plate 17 is provided with teeth meshing with the first gear 18. The mixed raw materials after proportioning are added through the feeding pipe 5 and added to the corresponding inner cylinder 7 in the cutting cylinder 4. The first motor 13 is started to drive the cutting knife 15 on the first rotating rod 14 to rotate in the corresponding inner cylinder 7 to cut the mixed raw materials. After cutting, the cylinder 11 is started to drive the first lifting plate 12 to move upward, so that the first rotating rod 14 and the cutting knife are taken out of the corresponding inner cylinder 7. 15, when the first lifting plate 12 moves upward, it drives one end of the plug rod 16 to move upward in the vertical groove 22 at the corresponding position on the first transmission plate 17, and drives one end of the plug rod 16 to slide upward in the first extrusion groove 21, so that after the cutting knife 15 moves out, it drives the switching rod 10, the switching disk 6 and the multiple inner cylinders 7 to rotate as a whole. When the plug rod 16 moves to the reset groove 23, the cylinder 11 drives the first lifting plate 12 to move downward, thereby driving one end of the plug rod 16 to slide downward in the extrusion groove 21, and by extruding the groove wall of the extrusion groove 21, the switching rod 10 is driven to continue to move. The switch plate 6 continues to rotate, thereby transferring the cut raw materials in the corresponding inner cylinder 7 to the fifth discharge port on the sanding cylinder 3, so that the cut raw materials fall directly into the sanding cylinder 3 for sanding. At the same time, the switching disk 6 drives the next adjacent raw material after proportioning to move to the bottom of the cutting knife 15. As the first lifting plate 12 moves downward, one end of the insertion rod 16 is driven to slide downward in the corresponding vertical groove 22. The switching disk 6 remains in position, so that the cutting knife 15 can be smoothly moved down to the corresponding inner cylinder 7. The first motor 13 is started to drive the cutting knife 15 to rotate to continue the cutting work.

[0017] The swing structure includes two swing rods 24 that rotate and pass through the two brackets 2 on one side close to each other. A swing plate 25 is installed on the end of the two swing rods 24 that are close to each other. A plurality of reinforcing rods 26 are connected between the bottom of the swing plate 25 and the sanding cylinder 3. A supporting structure is arranged between the sanding cylinder 3 and the inner wall of the material receiving frame 1. A driving structure is arranged on the top of the two brackets 2. The supporting structure includes two support rods 27 connected to the lower side of the sanding cylinder 3 near the inner wall of the left and right sides of the material receiving frame 1. Support grooves 28 are opened on the inner walls of the left and right sides of the material receiving frame 1. The support groove 28 is an arc groove with the swing rod 24 as the axis, and one end of the support rod 27 is supported in the support groove 28.

[0018] The sanding structure includes a second rotating rod 30 that is rotatably inserted into the sanding cylinder 3, and a plurality of sanding rods 31 are installed on the part of the second rotating rod 30 that is inserted into the sanding cylinder 3. The top end of the second rotating rod 30 rotates to pass through the swing plate 25, and a mounting plate 29 is installed in the middle of the swing plate 25. A second motor 34 is installed in the middle of the upper inner wall of the mounting plate 29, and the bottom end of the output shaft of the second motor 34 is connected to the top end of the second rotating rod 30; the driving structure includes two transverse grooves 38 opened on the bracket 2 near the front and rear edges, and a fixed rod 39 is connected between the inner walls of the left and right ends of each transverse groove 38. A moving frame 40 is movably sleeved on each group of two fixed rods 39, and a second transmission structure is arranged between the moving frame 40 and the second rotating rod 30. The four corner positions of the side of the moving frame 40 A connecting strip 41 is connected to each of the brackets 2, one end of which is connected to the driving ring 42. A through slot 35 is provided on the side of the bracket 2 away from the swing plate 25. One end of the swing rod 24 is rotatably connected to the groove wall at one end of the through slot 35. A second gear 37 is fixedly sleeved on the part of the swing rod 24 inserted into the through slot 35. A driving frame 36 is vertically movable through the through slot 35. The inner wall of the driving frame 36 is provided with teeth meshing with the second gear 37. A second transmission plate 43 is fixedly installed in the middle of the upper and lower side surfaces of the driving frame 36. A first transmission groove 44 is provided on each of the second transmission plates 43. An extrusion wheel 45 is movably provided at the position of the first transmission groove 44 on the second transmission plate 43. The extrusion wheel 45 is movably sleeved on the driving ring 42.The second transmission structure includes a rotating ring 53 rotatably mounted on the moving frame 40, and an L-shaped plate 52 extending to the top of the swing plate 25 is fixedly connected to the rotating ring 53. A transmission ring 47 is arranged in the middle of the upper part of the swing plate 25, and second guide bars 50 are installed at the left and right edges below the transmission ring 47. Two second guide grooves 51 for the second guide bars 50 to slide are arranged on the swing plate 25, one end of the L-shaped plate 52 is connected to the edge of the transmission ring 47, and two second transmission grooves 48 are arranged on the front and rear sides of the transmission ring 47. Two straight grooves 49 are arranged on the left and right sides of the transmission ring 47, and the two ends of the straight groove 49 are respectively connected to the ends of the two second transmission grooves 48, and the second transmission groove 48 is in an arc shape. A fixed sleeve 46 is fixed on the second rotating rod 30, and an L-shaped rod is connected to the fixed sleeve 46. The bottom end of the L-shaped rod is movably inserted into one of the second transmission grooves 48. After the cut raw material falls into the sand mill 3, the second motor 3 on the mounting plate 29 is started. 4, drives the second rotating rod 30 and the sanding rod 31 to rotate as a whole, cooperates with a plurality of steel balls in the sanding tube 3, and performs sanding work on the cut pieces in the sanding tube 3, and when the second rotating rod 30 rotates, it drives one end of the L-shaped rod on the fixed sleeve 46 to slide in the second transmission groove 48 on the transmission ring 47, and when one end of the L-shaped rod slides in the straight groove 49, it drives the transmission ring 47 to move on the swing plate 25, and drives the moving frame 40 on the fixed rod 39 through the L-shaped plate 52 and the rotating ring 53. The horizontal movement drives the extrusion wheel 45 on the driving ring 42 to squeeze the first transmission groove 44 on the second transmission plate 43, thereby driving the driving frame 36 to move in the vertical direction on the bracket 2, thereby driving the sand mill 3 to swing back and forth on the bracket 2, which not only improves the feeding speed of the sand mill 3 after the sand milling, but also assists in screening the material. After the sand milling material is fed out, the remaining material to be sand milled in the sand mill 3 can better contact with the sand mill structure, thereby improving the sand milling work efficiency. ;

[0019] The lifting structure includes a second lifting plate 54 fixedly connected to the bottom ends of the two lifting tubes 33, and a plurality of telescopic rods 55 are connected between the second lifting plate 54 and the middle of the bottom of the sanding tube 3. A spring 56 is sleeved on each telescopic rod 55, and the two ends of the spring 56 are respectively connected to the second lifting plate 54 and the bottom of the sanding tube 3. A mounting seat 57 is installed in the middle of the bottom of the second lifting plate 54, and a roller 58 is installed in the mounting seat 57. The roller 58 is rotatably set on the arc plate 59, and the two ends of the arc plate 59 They are respectively connected to the inner walls of the front and rear sides of the material receiving frame 1. The middle section of the arc plate 59 is an arc shape with the rocker rod 24 as the axis. A plurality of protrusions 60 are arranged at equal intervals on the upper part of the middle section of the arc plate 59. When the sanding cylinder 3 swings back and forth, it drives the roller 58 to roll on the arc plate 59 and the protrusions 60. With the elastic force of the spring 56, the lifting tube 33 and the screen plate are driven to move up and down on the sanding cylinder 3 as a whole, so as to better screen out the sanded raw materials for unloading, thereby further improving work efficiency.

[0020] In the actual operation process, first, the mixed raw materials after proportioning are added through the feeding pipe 5 and added to the corresponding inner cylinder 7 in the cutting cylinder 4, and the first motor 13 is started to drive the cutting knife 15 on the first rotating rod 14 to rotate in the corresponding inner cylinder 7 to cut the mixed raw materials. After cutting, the cylinder 11 is started to drive the first lifting plate 12 to move upward, so as to bring out the first rotating rod 14 and the cutting knife 15 from the corresponding inner cylinder 7. In the process of the first lifting plate 12 moving upward, it drives one end of the insertion rod 16 to move upward in the vertical groove 22 at the corresponding position on the first transmission plate 17, and drives one end of the insertion rod 16 to slide upward in the first extrusion groove 21, so that after the cutting knife 15 is moved out, it drives the switching rod 10, the switching disk 6 and multiple inner cylinders. 7 rotates as a whole. When the insertion rod 16 moves to the reset groove 23, the cylinder 11 drives the first lifting plate 12 to move downward, thereby driving one end of the insertion rod 16 to slide downward in the extrusion groove 21. By squeezing the groove wall of the extrusion groove 21, the switching rod 10 is driven to continue to rotate, so that the cut raw materials in the corresponding inner cylinder 7 are transferred to the fifth discharge port on the sand mill 3, so that the cut raw materials directly fall into the sand mill 3 for sanding. At the same time, the switching disk 6 drives the next adjacent raw material after proportioning to move to the bottom of the cutting knife 15. As the first lifting plate 12 moves downward, it drives one end of the insertion rod 16 to slide downward in the corresponding vertical groove 22. The switching disk 6 remains in place, so that the cutting knife 1 5 can be smoothly moved down to the corresponding inner cylinder 7, the first motor 13 is started to drive the cutting knife 15 to rotate to continue the cutting work, the second motor 34 on the mounting plate 29 is started to drive the second rotating rod 30 and the sanding rod 31 to rotate as a whole, and cooperate with a plurality of steel ball media in the sanding cylinder 3 to perform sanding work on the cut in the sanding cylinder 3, and when the second rotating rod 30 rotates, it drives one end of the L-shaped rod on the fixed sleeve 46 to slide in the second transmission groove 48 on the transmission ring 47, when one end of the L-shaped rod slides in the straight groove 49, it drives the transmission ring 47 to move on the swing plate 25, and drives the moving frame 40 to move horizontally on the fixed rod 39 through the L-shaped plate 52 and the rotating ring 53, thereby driving the extrusion wheel 45 on the driving ring 42 to move horizontally. The second transmission plate 43 squeezes the first transmission groove 44 to drive the driving frame 36 to move in the vertical direction on the bracket 2, thereby driving the sanding tube 3 to swing back and forth on the bracket 2, which not only improves the feeding speed of the sanded raw materials in the sanding tube 3 and performs auxiliary screening, but also allows the remaining raw materials to be sanded in the sanding tube 3 to better contact with the sanding structure after the sanded raw materials are discharged, so as to improve the sanding work efficiency. In addition, while the sanding tube 3 swings back and forth, it drives the roller 58 to roll on the arc plate 59 and the protrusion 60, and cooperates with the elastic force of the spring 56 to drive the lifting tube 33 and the screen plate as a whole to move up and down on the sanding tube 3, so as to better screen out the sanded raw materials for feeding, thereby further improving the work efficiency.

[0021] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A process for preparing manganese-zinc ferrite powder, characterized in that: The following steps are involved: S1: adding raw materials, proportioning and mixing the raw materials in a mixing device; S2: cutting, cutting the mixed raw materials in a cutting device; S3: sand grinding, in which the cut pieces are sanded and granulated in a sand grinding device; S4: pre-burning, pre-burning the sprayed raw materials to reduce impurities; S5: Packaging, packaging and stacking the pre-burned powder; The sanding device in S3 comprises a material receiving frame (1) and a sanding cylinder (3); the material receiving frame (1) having a third material discharge opening on its lower inner wall is provided with brackets (2) fastened with bolts at the upper parts of the left and right sides thereof; the sanding cylinder (3) is arranged on two brackets (2) via a swinging structure; the bottom end of the sanding cylinder (3) is inserted into the material receiving frame (1); a sanding structure is arranged on the sanding cylinder (3); material discharge pipes (32) are installed in two fourth material discharge openings at the lower edge of the sanding cylinder (3); a lifting pipe (33) is movably inserted into the material discharge pipe (32); a sieve plate is installed in the lifting pipe (33); and two lifting pipes (33) are installed at the bottom end of the sanding cylinder (3) via a lifting structure; The cutting device in S2 comprises a cutting cylinder (4) installed at the front edge of the sanding cylinder (3), the cutting cylinder (4) being provided with a cutting structure, a plurality of inner cylinders (7) being provided in the cutting cylinder (4) through a switching structure, a first discharge port (8) being provided at the bottom of the cutting cylinder (4), the first discharge port (8) being connected to a fifth discharge port provided on the top of the sanding cylinder (3), and a feeding pipe (5) being fixedly passed through the left edge of the top of the cutting cylinder (4); The cutting structure comprises a cylinder (11) mounted on the right edge of the upper side of the cutting cylinder (4); the top end of the output shaft of the cylinder (11) is connected to a first lifting plate (12); a first motor (13) is mounted on the upper left end of the first lifting plate (12); one end of the output shaft of the first motor (13) is connected to a first rotating rod (14) that rotates through the first lifting plate (12); a plurality of cutting knives (15) are mounted on a portion of the first rotating rod (14) that is movably inserted into the cutting cylinder (4); The switching structure comprises a switching disk (6) rotatably mounted on the lower inner wall of the cutting cylinder (4), a plurality of second material discharge ports (9) being provided on the switching disk (6), the plurality of second material discharge ports (9) being distributed at equal angles on the circumference of the switching disk (6), a plurality of inner cylinders (7) being fixedly mounted at the second material discharge ports (9) on the switching disk (6), the inner cylinders (7) and the second material discharge ports (9) being communicated with each other, the switching disk (6), a switching rod (10) being fixedly connected at the middle of the upper portion of the switching disk (6), the top end of the switching rod (10) being rotatably arranged to pass through the cutting cylinder (4), and the switching rod (10) being transmission-connected to the first lifting plate (12) via a first transmission structure; The first transmission structure comprises a first gear (18) fixedly sleeved on the switching rod (10) and located above the cutting cylinder (4); the first lifting plate (12) is connected to an insertion rod (16) at a middle position near the end surface of one end of the switching rod (10); a first guide groove (20) is provided at a middle position near the top of the cutting cylinder (4); a first guide bar (19) is slidably provided in the first guide groove (20); a first transmission plate (17) is installed above the first guide bar (19); a plurality of extrusion grooves (21) are provided at equal intervals above the first transmission plate (17) near a side surface of the first lifting plate (12); vertical grooves (22) are provided at the lower groove walls of two adjacent extrusion grooves (21); a reset groove (23) is provided on the first transmission plate (17) and is connected to the top ends of the plurality of extrusion grooves (21); one end of the insertion rod (16) is movably inserted into the extrusion groove (21); and teeth meshingly connected with the first gear (18) are provided on the first transmission plate (17).

2. The process for preparing a manganese-zinc ferrite powder according to claim 1, characterized in that: The swing structure comprises two swing rods (24) which rotate and pass through the two brackets (2) on one side close to each other, and a swing plate (25) is installed on the ends of the two swing rods (24) close to each other. A plurality of reinforcing rods (26) are connected between the bottom of the swing plate (25) and the sanding cylinder (3). A supporting structure is arranged between the sanding cylinder (3) and the inner wall of the material receiving frame (1), and a driving structure is arranged on the top of the two brackets (2).

3. The preparation process of a manganese-zinc ferrite powder according to claim 2, characterized in that: The support structure comprises two support rods (27) connected to the lower side of the sanding cylinder (3) and close to the inner walls of the left and right sides of the material receiving frame (1). The inner walls of the left and right sides of the material receiving frame (1) are both provided with support grooves (28). The support groove (28) is an arc groove with the swing rod (24) as the axis. One end of the support rod (27) is supported in the support groove (28).

4. The process for preparing a manganese-zinc ferrite powder according to claim 1, characterized in that: The sanding structure comprises a second rotating rod (30) which is rotatably inserted into the sanding cylinder (3); a plurality of sanding rods (31) are installed on the portion of the second rotating rod (30) which is inserted into the sanding cylinder (3); the top end of the second rotating rod (30) rotates to pass through a swing plate (25); a mounting plate (29) is installed in the middle of the swing plate (25); a second motor (34) is installed in the middle of the upper inner wall of the mounting plate (29); and the bottom end of the output shaft of the second motor (34) is connected to the top end of the second rotating rod (30).

5. The process for preparing a manganese-zinc ferrite powder according to claim 2, characterized in that: The driving structure comprises two transverse grooves (38) formed on the bracket (2) near the front and rear side edges, a fixed rod (39) is connected between the inner walls of the left and right ends of each transverse groove (38), a moving frame (40) is movably sleeved on each group of two fixed rods (39), a second transmission structure is provided between the moving frame (40) and the second rotating rod (30), four corner positions of the side of the moving frame (40) are connected to connecting strips (41), one end of the connecting strip (41) is connected to the driving ring (42), a through groove (35) is formed on the side of the bracket (2) away from the swing plate (25), one end of the swing rod (24) is rotatably connected to the through groove A second gear (37) is fixedly sleeved on a groove wall at one end of the through groove (35), a portion of the swing rod (24) inserted into the through groove (35) is fixedly sleeved, a driving frame (36) is vertically movably passed through the through groove (35), and teeth meshingly connected with the second gear (37) are arranged on the inner wall of the driving frame (36), and second transmission plates (43) are fixedly installed at the middle of the upper and lower side surfaces of the driving frame (36), and each of the second transmission plates (43) is provided with a first transmission groove (44), and an extrusion wheel (45) is movably arranged on the second transmission plate (43) at the position of the first transmission groove (44), and the extrusion wheel (45) is movably sleeved on the driving ring (42).

6. The process for preparing manganese-zinc ferrite powder according to claim 5, characterized in that: The second transmission structure comprises a rotating ring (53) rotatably mounted on the moving frame (40), an L-shaped plate (52) extending above the swing plate (25) being fixedly connected to the rotating ring (53), a transmission ring (47) being arranged in the middle of the upper part of the swing plate (25), second guide bars (50) being arranged at the left and right edges below the transmission ring (47), the swing plate (25) being provided with two second guide grooves (51) for the second guide bars (50) to slide, one end of the L-shaped plate (52) being connected to the transmission ring (47) 7), two second transmission grooves (48) are provided on the front and rear sides of the transmission ring (47), two straight grooves (49) are provided on the left and right sides of the transmission ring (47), the two ends of the straight grooves (49) are respectively connected to the ends of the two second transmission grooves (48), the second transmission grooves (48) are in an arc shape, and a fixed sleeve (46) is provided on the second rotating rod (30), and an L-shaped rod is connected to the fixed sleeve (46), and the bottom end of the L-shaped rod is movably inserted into one of the second transmission grooves (48).

7. The process for preparing manganese-zinc ferrite powder according to claim 1, characterized in that: The lifting structure comprises a second lifting plate (54) fixedly connected to the bottom ends of the two lifting tubes (33); a plurality of telescopic rods (55) are connected between the upper surface of the second lifting plate (54) and the middle of the lower surface of the sanding tube (3); a spring (56) is sleeved on each of the telescopic rods (55); two ends of the spring (56) are respectively connected to the lower surface of the second lifting plate (54) and the sanding tube (3); a mounting seat (57) is installed in the middle of the lower surface of the second lifting plate (54); a roller (58) is installed in the mounting seat (57); the roller (58) is rotatably arranged on an arc plate (59); two ends of the arc plate (59) are respectively connected to the inner walls of the front and rear sides of the material receiving frame (1); a middle section of the arc plate (59) is in an arc shape with the swing rod (24) as the axis; a plurality of protrusions (60) are arranged at equal intervals on the upper surface of the middle section of the arc plate (59).

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